python - “用户”对象在创建对象时没有属性 '__getitem__'

Question

尝试使用 create 对象将数据插入带有外键的 python 模型中，但获取的“User”对象没有属性“getitem”

模型.py

从 future 导入unicode_literals 从 django.db 导入模型 从 ..loginRegistration_app.models 导入用户

class PostManager(models.Manager):
    error_list = []
    def post_in(self, postData, user_id):
        if len(postData['post']) < 1:
            context = {'status':0}
            return context
        else:
            curr_user = User.objects.get(id = user_id)
            # print curr_user.last_name
            self.create(secrets = postData['post'], users_id = curr_user['id'])

class Like(models.Model):
    like = models.BooleanField()
    users = models.ForeignKey(User, related_name = 'user_likes')
    created_at = models.DateTimeField(auto_now_add = True)
    upated_at = models.DateTimeField(auto_now = True)

class Secret(models.Model):
    secret = models.TextField(max_length = 1000)
    likes = models.ForeignKey(Like, related_name = 'all_likes')
    users = models.ForeignKey(User, related_name = 'user_secrets')
    created_at = models.DateTimeField(auto_now_add = True)
    upated_at = models.DateTimeField(auto_now = True)

    objects = PostManager()

View .py

from django.shortcuts import render, redirect
from .models import Secret
from django.contrib import messages

def index(request):
    if 'user_id' not in request.session:
        return redirect('main:home')
    # put query to display most recent secrets

    return render(request, 'dojo_secrets_app/index.html')

def post_it(request):
    post_this = Secret.objects.post_in(request.POST, request.session['user_id'])
    return redirect('secrets:home')

错误:

TypeError at /secrets/post_it
'User' object has no attribute '__getitem__'

self.create(secrets = postData['post'], users_id = curr_user['id']) 

Answer 1

id 是用户实例的属性，而不是某个 dict 键:

def post_in(self, postData, user_id):
    # ...
    curr_user = User.objects.get(id = user_id)
    self.create(..., users_id = curr_user.id)  # id is an attribute

但是既然user_id是你 View 的一个属性，为什么不使用它呢？

    self.create(..., users_id = user_id) 

顺便说一句，您的 ForeignKey 字段实际上应该具有单数名称('like'、'user')，复数名称在语义上没有意义......